1,USB hub mouse pad 2,12 digit calculator with solar energy power 3,1.1 & 2.0 USB hub available 4,LED blue backlight Item No.X1452NameUSB hub mouse pad with calculatorFeature1,12 digit solar calculator with mouse pad 2, 2.0 &1.1 USB hub available 3,Ultra-thin touch screen key 4,Blue LED backlightUnit size242*190*9.5mmMaterialABS